/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is MPEG4IP.
 *
 * Contributer has declined to give copyright information, and gives
 * it freely to the world.
 */

#include "src/impl.h"

namespace mp4v2
{
    namespace impl
    {

        ///////////////////////////////////////////////////////////////////////////////

        MP4TextAtom::MP4TextAtom(MP4File &file)
            : MP4Atom(file, "text")
        {
            // The atom type "text" is used in two complete unrelated ways
            // i.e. it's real two atoms with the same name
            // To handle that we need to postpone property creation until
            // we know who our parent atom is (stsd or gmhd) which gives us
            // the context info we need to know who we are
        }

        void MP4TextAtom::AddPropertiesStsdType()
        {

            AddReserved(*this, "reserved1", 6); /* 0 */

            AddProperty(new MP4Integer16Property(*this, "dataReferenceIndex"));/* 1 */

            AddProperty(new MP4Integer32Property(*this, "displayFlags")); /* 2 */
            AddProperty(new MP4Integer32Property(*this, "textJustification")); /* 3 */

            AddProperty(new MP4Integer16Property(*this, "bgColorRed")); /* 4 */
            AddProperty(new MP4Integer16Property(*this, "bgColorGreen")); /* 5 */
            AddProperty(new MP4Integer16Property(*this, "bgColorBlue")); /* 6 */

            AddProperty(new MP4Integer16Property(*this, "defTextBoxTop")); /* 7 */
            AddProperty(new MP4Integer16Property(*this, "defTextBoxLeft")); /* 8 */
            AddProperty(new MP4Integer16Property(*this, "defTextBoxBottom")); /* 9 */
            AddProperty(new MP4Integer16Property(*this, "defTextBoxRight")); /* 10 */

            AddReserved(*this, "reserved2", 8); /* 11 */

            AddProperty(new MP4Integer16Property(*this, "fontNumber")); /* 12 */
            AddProperty(new MP4Integer16Property(*this, "fontFace")); /* 13 */

            AddReserved(*this, "reserved3", 1); /* 14 */
            AddReserved(*this, "reserved4", 2); /* 15 */

            AddProperty(new MP4Integer16Property(*this, "foreColorRed")); /* 16 */
            AddProperty(new MP4Integer16Property(*this, "foreColorGreen")); /* 17 */
            AddProperty(new MP4Integer16Property(*this, "foreColorBlue")); /* 18 */

        }

        void MP4TextAtom::AddPropertiesGmhdType()
        {

            AddProperty(new MP4BytesProperty(*this, "textData", 36)); /* 0 */

        }


        void MP4TextAtom::Generate()
        {
            ASSERT(m_pParentAtom);
            if (ATOMID(m_pParentAtom->GetType()) == ATOMID("stsd"))
            {
                AddPropertiesStsdType();
                GenerateStsdType();
            }
            else if (ATOMID(m_pParentAtom->GetType()) == ATOMID("gmhd"))
            {
                AddPropertiesGmhdType();
                GenerateGmhdType();
            }
            else
            {
                log.warningf("%s: \"%s\": text atom in unexpected context, can not generate", __FUNCTION__,
                             GetFile().GetFilename().c_str());
            }

        }

        void MP4TextAtom::GenerateStsdType()
        {
            // generate children
            MP4Atom::Generate();

            ((MP4Integer16Property *)m_pProperties[1])->SetValue(1);

            ((MP4Integer32Property *)m_pProperties[2])->SetValue(1);
            ((MP4Integer32Property *)m_pProperties[3])->SetValue(1);

        }

        void MP4TextAtom::GenerateGmhdType()
        {
            MP4Atom::Generate();

            // property 0 has non-zero fixed values
            static uint8_t textData[36] =
            {
                0x00, 0x01,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x01,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x00, 0x00,
                0x40, 0x00,
                0x00, 0x00,
            };
            ((MP4BytesProperty *)m_pProperties[0])->SetValue(textData, sizeof(textData));

        }

        void MP4TextAtom::Read ()
        {
            if (ATOMID(m_pParentAtom->GetType()) == ATOMID("stsd"))
            {
                AddPropertiesStsdType();
            }
            else if (ATOMID(m_pParentAtom->GetType()) == ATOMID("gmhd"))
            {
                AddPropertiesGmhdType();
            }

            MP4Atom::Read();
        }

        ///////////////////////////////////////////////////////////////////////////////

    }
} // namespace mp4v2::impl
